If you go to Bumrungrad Hospital in Bangkok, you will receive care equal to, actually better than, anything you'll get in the States. They have their own website in English at Bumrungrad.com. I saw a world class dematologist (have had some skin cancer in the past) received treatment and therapy for about 20 minutes form a MOHS specialist who trained in the USA - damage? Ten bucks US. Would have cost HUNDREDS in the USA.

Similar story with a gastroenterologist - US$7.

A female friend had a sonogram done - US$9 from an excellent, highly skilled gynocologist.

Also, on Phuket, Bankok Phuket Hospital is of good quality. But, if I was going to have surgery on my eyes, I'd go to Bumrungrad.